Hi,
After recently upgrading from Kubuntu 22.04 to 24.04 my 4K external monitor isn't working properly. When I enable it at full resolution it remains black and my computer grinds to a halt and I have to reboot. I can enable it at 1920x1080 or 2560x1440.
However if I try and change it to native resolution (3840x2160) it simply does not change.
If it is disabled and I enable it directly into that resolution, it does not show, and everything grinds to a halt.
I've experimented with different drivers but did not improve matters.
I'm currently running the "recommended" proprietary Nvidia 550 drivers. And the Nvidia card is active.
My computer is a Dell XPS 15 laptop with Nvidia RTX 3050 Ti Laptop GPU.
Would love some advice. It was all working fine pre-upgrade. And I'm not keen to have to start again with a clean install.
Thanks,
Alan
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